Method for online replacement and method for installation of elevator sheave liner, and elevator sheave liner

A method for online replacement of an elevator sheave liner, the method comprising steps of:

• A. rotating an elevator sheave provided with the elevator sheave liner comprising a plurality of assemblable sections such that at least one section to be replaced in the elevator sheave liner is rotated to an operating area, wherein the section to be replaced is not engaged with an elevator rope provided on the elevator sheave when in the operating area;
• B. detaching the section to be replaced from the elevator sheave, and installing a replacement section for replacing the section to be replaced onto the elevator sheave;
• and
• C. repeating steps A and B until all or part of sections to be replaced in the elevator sheave liner are replaced;
• wherein a joint seam between two adjacent sections of the elevator sheave liner is constructed in the shape of an oblique line with an angle of less than 90° and not less than 10° formed between the oblique line and a longitudinal section of the elevator sheave.